Sectional fuel distributor



Dec. 7, 1937. H. P. ANDERSON 2,101,463

SECTIONAL FUEL DISTRIBUTOR Filed NOV. 24, 1933 2 Sheets-Sheet l I NMQEI" 1N VEN TOR.

ATTORNEY.

Dec. 7, 1937.

INVENTOR. ifa/ame%zdzrmfl BY 2 Sheets-Sheet 2 H. P. ANDERSON SECTIONAL FUEL DISTRIBUTOR Filed Nov. 24, 1933 IIIIIIHHIW ATTORNEY.

Patented Dec. 7, 1937 PATENT OFFICE SECTIONAL FUEL DISTRIBUTOR Howard P. Andersom Erie, Pa., assignor to The Standard Stoker Company, Inc., a corporation of Delaware Application November 24, 1933, Serial No. 699,525

4 Claims.

ments in sectional fuel distributors for use in connection with stokers, has for its principal object the provision of a'sectional fuel distributor wherein the separable sections comprising the distributor are firmly secured in a manner so that adjacent surfaces are in contact with each other, resulting in better conductivity of heat from one section to another. Thus the front section of the distributor which is subjected to the intense heat within the firebox, is firmly secured to the rear section which has a portion lying outside the firebox, thereby transmitting the heat to this cooler rear section for dissipation. In this manner, the life of the front section is prolonged.

A further object of this invention is the provision of a fuel distributor of the type specified comprising separable front and rear sections, the rear section having a ledge underlying the front section and being provided with means for restraining downward movement of said front section so that when the securing means which holds these sections together is removed, the front section will not fall onto the firebed.

To those skilled in the art the advantages of my invention will be apparent when the following specification is read in connection with the drawings, in which Figure l is a longitudinal sectional view taken through the firing opening of a furnace with a stoker embodying; my invention in similar section, parts thereof being shown in elevation,

Figure 2 is a plan view of parts shown in Figure 1 taken on line 2-2 thereof,

Figure 3 is an isometric view of the rear section of the novel sectional distributor,

Figure 4 is an isometric view of the front section of the novel sectional distributor, and

Figure 5 is a transverse cross sectional view of the fuel distributor taken on the line 55 of Figure 2.

These drawings illustrate a furnace I having a wall II with the usual firing opening l2 therethrough. Fuel is fed into the furnace I!) through the firing opening I2 by means of a stoker S which includes the discharge conduit l3 having a fuel delivery mouth M in open communication with the firing opening l2. The fuel is urged through the discharge conduit I3 and then passes through the delivery mouth It onto the fuel supporting surface l of the distributor D. A pressure fluid head l6 issues blasts of pressure fluid through the jet openings I! which sweep the el across the fuel supporting surface of the distributor D and thence over the firebed in the furnace.

The above described construction is not new in itself; the present invention resides in the novel form of the fuel distributor D, which will This. invention, which relates to improve now be described in detail. The distributor D includes the front section l8 and the rear section IS, the former extending into the furnace while the latter is received in a recess formed in the bottom of the stoker delivery mouth I4. The rear section l9 is provided with a flange 2| through which are passed the bolts 22 for securing this section of the distributor to the stoker discharge conduit.

At its forward end, the rear section I9 is provided with a recess 23 into which is fitted the rearward extension 24 of the front sectionl I8. Disposed within the recess 23 are the ledges such as 25, each of which underlies the rearward extension 24 of the front section for supporting the same. It will be observed from the drawings that the ledges 25 are disposed-below the fuel supporting surface IS. A threaded stud or projection such as 26 is screwed into an opening 21 in each ledge 25; the upper end of each stud 26 is preferably slightly below the plane of the fuel supporting surface l5. Each ledge 25 is joined with the main portion of the rear section H! by a rear wall28 and a side wall 29.

Preferably, the ledges 25 are spaced apart in the recess 23 and form therebetween a passage which registers with a passage 5| formed in the front section I8. The passage 5| extends toward the front wall 52 of the front section l8 between the fuel supporting surface l5 and the bottom wall 54 of the front section I8, the said front wall being apertured by holes such as 53 whereby air is entrained from a point exterior of the firebox through the passages 50, 5| for cooling the front section. If desirable, the bottom wall 54 of the front section may also be perforated as at 55.

The rearward extension 24 of the front section i8 is apertured by holes such as 30, each of which passes freely over its respective stud 26. Concentric with each hole 30 is a counter bored portion 3| bored from the fuel supporting surface I 5 of the distributor downwardly a distance sufficient to receive a nut 32 and a lock washer 33. The nut 32 engages the threaded stud 26 and is drawn tightly by a socket wrench which fits into the counter-bored portion 3|. When the nuts 32 are drawn tightly, the underside wall 34 of the. rearward extension 24 seats firmly on the ledges 25, producing a rigid connection between the front section l8 and the rear section l9 and also a better conduction of heat from the front section to the rear section is made possible by this construction. Thus, heat is dissipated from that portion of the distributor which extends into the furnace to the cooler rear section l9, thereby increasing the life of this renewable front section. 7

In the well known B-K Stoker embodying my present invention, the pressure fluid head l6 is disposed rearward of the furnace wall II and the distributor D extends forwardly therefrom into the furnace II]. In this type of stoker it is necessary to provide fuel deflecting means for the purpose of diverting a portion of the fuel to the rear corners of the furnace. means includes fuel pockets such as 35, one at each side of the distributor D. These pockets 35 are. formed by a wall 36 which slopes downwardly and forwardly from the fuel supporting surface I5. Each pocket 35 opens laterally toward its respective side of the furnace and as the fuel is swept across the fuel supporting surface I 5, these pockets intercept a portion of the fuel and deflect it laterally. It will be observed from Figures 3 and 4 that the front section I8 and the rear section I9 carry portions of these. sloping walls 36 forming the fuel pockets 35 and when these two sections are assembled, the sloping wall portions constitute in effect a single continuous wall 36 at each side of the distributor. In practice I have found it advisable to dispose the securing means for the two sections inwardly of this sloping wall 36 in order that no part of such securing means would protrude into the path of the. fuel passing through the pockets 35.

Whenever the front section It is warped or otherwise damaged due to the intense heat in the furnace, the firedoor 31 or the hinged cover 38 may be opened and the threaded nuts 32 unscrewed by means of a socket wrench. By the use of the studs or projections 26, the front section I8 will not fall forwardly into the furnace I!) when the nuts 32 are removed and thus the assembly and disassembly of the two sections is simplified.

I claim:

1. A sectional fuel distributing plate for stokers comprising a front section and a rear section having a fuel supporting surface, the forward portion of said rear section being provided with a recess intermediate the sides thereof, transversely extending wall portions depending from said rear section along the inner edge of said recess, a pair of longitudinally extending walls depending from said rear section along the side edges of said recess, a ledge joining the lower edge of each of said transverse wall portions and the lower edge of a respective longitudinal wall forming supporting means, each ledge carrying an upstanding threaded projection, the portion of the fuel supporting surface of said rear section on each side of said recess sloping forwardly and downwardly below the plane of the surface of the rear section rearward of said recess, the rearward portion of said front section being provided with a rearward extension fitted in said recess and seated on said supporting means, said rearward extension engaging said threaded projections, a threaded member engaging each of said threaded projections for firmly securing the front section to the rear section, said front section having lateral extensions lying in a plane below the surface thereof and forming pockets therewith, said extensions forming continuations of the sloping portions of said rear section.

2. As a new article of manufacture, a rear section of a fuel distributing plate for stokers including a fuel supporting top wall, said top wall being provided with a recess in its forward end intermediate the sides thereof, transversely extending Wall portions depending from said top wall along the inner edge of said recess, said de- This deflecting pending wall portions being spaced apart to form an opening therebetween, the portion of said top wall on each side of the recess therein sloping forwardly and downwardly below the plane of the top wall rearward of said recess, a pair of longitudinally extending walls depending from said top wall along the side edges of the recess therein, ledges at the sides of the opening between said transverse depending wall portions joining the lower edges of said transverse wall portions and the lower edges of said longitudinal walls and lying in a plane below said fuel supporting top wall, each of said ledges being provided with an upstanding threaded element.

3. A sectional fuel distributing plate for stokers comprising a front section and a rear fsection, each of said sections having a fuel supporting surface, the forward portion of said rear section being provided with a recess intermediate the sides thereof, ledge-like supporting means exstanding threaded projections, the portion of the fuel supporting surface of said rear section on each side of said recess sloping forwardly and downwardly below the plane of the surface of the rear section rearward of said recess, the rearward portion of said front section being provided with a rearward extension fitted in said recess and seated on said supporting means, said rearward extension engaging said threaded projections, and a threaded member engaging each of said threaded projections for firmly securing the front section to the rear section, said front section having lateral extensions lying in a plane below the surface thereof and forming pockets therewith, said extensions forming continuations of the sloping portions of said rear section.

4. A sectional fuel distributing plate for stokers comprising a front section and a rear section, each of said sections having a fuel supporting surface, the forward portion of said rear section being provided with a recess intermediate the sides thereof, ledge-like supporting means formed with said rear section and lying in a plane below the fuel supporting surface of said rear section and between the side and inner edges of said recess, said ledge-like supporting means carrying a plurality of upstanding threaded projections rigidly secured therewith and terminating at their upper ends below the. level of the fuel supporting surface of said rear section, said front section having a rearward extension intermediate its sides fitting in said recess and seated on said supporting means, the top face of said extension forming a portion of the fuel supporting surface of said front section, the extension-of said front section being provided with a plurality of holes therethrough receiving the threaded projections of said ledge-like supporting means for loosely holding said front and rear sections together, the diameter of the threaded projections above said supporting means being less than the diameter of the holes in said front section, and threaded members threaded on said threaded projections for rigidly securing said front and rear sections together, said members having no part thereof extending above the plane of the fuel supporting surface of said front section.

HOWARD P. ANDERSON. 

